43009406473 has 4 divisors (see below), whose sum is σ = 46919352528. Its totient is φ = 39099460420.

The previous prime is 43009406443. The next prime is 43009406491. The reversal of 43009406473 is 37460490034.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43009406473 - 2²⁹ = 42472535561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43009406443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954973011 + ... + 1954973032.

It is an arithmetic number, because the mean of its divisors is an integer number (11729838132).

Almost surely, 2^43009406473 is an apocalyptic number.

It is an amenable number.

43009406473 is a deficient number, since it is larger than the sum of its proper divisors (3909946055).

43009406473 is a wasteful number, since it uses less digits than its factorization.

43009406473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909946054.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 43009406473 in words is "forty-three billion, nine million, four hundred six thousand, four hundred seventy-three".